Hello everyone and thanks in advance to anyone who helps me. I have a mini bike with two motors, one rear and one front. I am using two separate Spinted VESC Ubox Controllers in aluminum, 85V 250A based on VESC, with a 72V nominal battery and a discharge rate of 450A, and two 6000W motors. Everything works perfectly, even when setting many amps on the motors. I spent a day on the track, going very fast, and had no issues with the motor or VESC temperature.
However, the strange thing is that when I do a test starting from a standstill and giving it full throttle, the MOSFET burns out and I can't figure out why. If I accelerate hard from 10 km/h, nothing happens; in fact, everything works well and the bike pulls strongly. I'm not an expert, but to give you some useful information: the VESCs are connected via CAN bus, the main and front VESC use FOC, Hall sensors, original Ortega, and traction control is enabled.
I know it's not much, but not knowing what the problem could be, I don't know what data to provide. Please ask and I will give you all the configuration details you need. Please help me, thank you.
Voltage could be an issue. Reduce ex. 60V and test again. And longer acceleration time could solve it.